What is the point of comparing these 2 sites with each other? there are also many more sites that you could compare with each other? Then you can also consider several criteria to compare with each other and you get a much better picture.
Maybe the point is he wants to know the advantages and disadvantages of both sites, so I think he can select which site will fit what he wants. We can also use that for our benefit to know which site we will use to gamble. Each gambler will have their own decision to choose the site, and people can read the review from other members. It can also give us more knowledge about each site, so we can maybe suggest to our friends.